APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Jianfang Li,Zhenxing Yang,Chaofeng Wang,Shuilin Wu,Yufeng Zheng,Zhenduo Cui,Hui Jiang,Zhaoyang Li,Shengli Zhu,Liheng Feng,Xiangmei Liu
Photocatalytic materials are one of the most promising alternatives of antibiotics for wound disinfection, and the bacteria-killing efficacy is restrained by photocatalytic performance. Herein, Ti 3 C 2 MXene-anchored 2D metal-organic frame (MOF) nanosheets were constructed to enhance the photocatalytic performance through interface engineering strategy by in-situ growth of 2D MOF on Ti 3 C 2 nanosheets. On the one hand, the close contact between them decreased the bandgap of 2D MOF, improving the yield of photogenerated electrons. On the other hand, it not only provided a rapid electron transfer channel across the interface but also induced the formation of Schottky junction at the interface. Consequently, the separation efficiency of photo-generated electron-hole pairs was significantly enhanced by rapid transfer and inhibition of electron backflow. Thus, under 660 nm plus 808 nm light, MOF/Ti 3 C 2 killed 99.73 ± 0.12% of Staphylococcus aureus . This work will provide insights for designing photo-responsive materials through in-situ interfacial engineering strategies.
研究领域:
材料科学
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生物学
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医学
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DOI
高影响因子
Journal of Physical Chemistry C
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2019
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IF 4.309
Nuanfei Zhu,Lantian Gu,Jin Wang,Xuesong Li,Guoxi Liang,Jinhui Zhou,Zhen Zhang
The development of a simple and sensitive method for glucose determination is significant in the early diagnosis and treatment of diabetes. However, current analytical approaches have various defects in their applications. Here, an attractive chemiluminescence-based sensor is developed for one-step and rapid detection of glucose in human urine. In this work, a 2D metal–organic framework (2D-MOF) nanosheet with peroxidase activity was first synthesized, which could catalyze the decomposition of hydrogen peroxide (H2O2) and further oxidize luminol to produce a strong chemiluminescence signal. Then, luminol and glucose oxidase (GOD) were successively labeled on the 2D-MOF nanosheet, obtaining a simple chemiluminescence-functionalized sensor (Co-TCPP(Fe)@luminol@GOD). When Co-TCPP(Fe)@luminol@GOD was introduced to the detection system containing glucose, substantial H2O2 was released under the catalysis of GOD on Co-TCPP(Fe). Then, the produced H2O2 was decomposed by the 2D-MOF nanosheet, and the luminol on Co-TCPP(Fe)@luminol@GOD was further oxidized, generating a chemiluminescence signal, finally achieving rapid determination of glucose. Under the optimized condition, fabrication of 2D-MOF nanosheets as sensitive glucose sensors exhibited good performance during the process: (i) good sensitivity (LOD, 10.667 μg/L) with a wide linear range (32–5500 μg/L); (ii) satisfactory accuracy (recoveries, 89–121.2%; CV, 3.5–7.4%); (iii) low cost; and (iv) simple operation. Our proposed method here has the potential for screening glucose in various human urine samples from hospitals.
研究领域:
医学诊断
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材料科学
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分析化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2019
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IF 3.218
Bingbing Liu,Xiaoya Wang,Yunyun Zhai,Zulei Zhang,Haiqing Liu,Lei Li,Herui Wen
Due to its nano-thickness, fast mass transfer and excellent electron transfer capability, two-dimensional (2D) MOF are an efficient strategy to develop good electrocatalytic materials. In this paper, 2D-MOF were synthesized by facile and cost-efficient methods. MOF can be fast prepared with nucleation and crystal growth in several minutes at room temperature , leading to very thin 2D Co-MOF. Herein, Co, Ni and NiCo-based 2D MOF as non-enzymatic H 2 O 2 sensors at different oxidation potentials in KOH solution, the Co-MOF exhibited excellent H 2 O 2 oxidation and detection performance including a wide linear range from 0.5 μM to 832.5 μM, low detection limit of 0.69 μM, and very fast sensing response in basic solution. By taking advantage of excellent conductivity, the Co-MOF showed the low oxidation potential for H 2 O 2 and good detection performance at 0.25 V. It was comparable to most carbon materials and reported MOF materials for H 2 O 2 detection. We insist that 2D MOF is effective for creating active catalysts. The 2D Co-MOF performed higher electrochemical sensitivity with high stability, conductivity, and selectivity. It indicates 2D MOF has potential employment in the fabrication of sensing devices.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
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IF 7.46
Xiujuan Qiao,Xin Ma,Xiaoyu Ma,Tianli Yue,Qinglin Sheng
The increasing requirement for highly sensitive sensors has promoted the development of new functional nanomaterials and various signal amplification strategies. Due to 2 dimensional (2D) materials’ excellent features of large surface areas, structural diversity, and abundant exposed accessible active sites, 2D MOF nanosheets exhibit potential applications in biosensing. Here, an ultrathin micron-sized MOF sheets with good dispersibility and high stability were prepared. Furthermore, a novel label-free aptasensor for ochratoxin A (OTA) detection had been developed based on 2D MOF nanosheets. This sensing signal was amplified by signal amplification strategies containing DNA walker machine, enrichment of Mb signal and nanomaterials of 2D MOF nanosheets and Ag NPs. With the help of these signal amplification strategies, the detection of OTA was reached with a low detection limit (0.08 fg mL −1 ) and a wide linear rage (0.10 fg mL −1 – 1 μg mL −1 ). Additionally, the aptasensor exhibits excellent OTA sensing performances, for example, good stability, outstanding selectivity, excellent repeatability, and regenerability.
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Yu Zhou,Long Zhou,Chunhua Ni,Enhui He,Liangmin Yu,Xia Li
A new MOF-derived CoCeOx nanosphere/g-C 3 N 4 nanosheet composite material with a high specific surface area, compact interface, abundant active sites, and promotion of electron transfer and separation was successfully prepared. The prepared 10% CoCeOx/g-C 3 N 4 composite material generated hydrogen with an efficiency of 1050 µmol g −1 h −1 under visible light irradiation, and 97% of carbamazepine was degraded in 1 h at a degradation rate of 0.05 min −1 with the help of PDS. Based on DFT calculations and mass spectrometry analysis , the degradation products and degradation pathways of carbamazepine were also proposed. According to tests of the photocatalytic properties, SO 4 -• , h + ,•OH, and •O 2 - were produced by the composite itself; these species play an important role in the degradation. The photocatalytic mechanism was also proposed. The prepared CoCeOx/g-C 3 N 4 composite material provides a simple and effective strategy for energy utilization and wastewater treatment.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Li-Hao Xu,Yan Li,Shen-Hui Li,Ming-Yu Lv,Zhi-Ping Zhao
Expanding the metal–organic frameworks (MOFs) category using room-temperature colloidal chemistry route with regular crystal structure is challenging, but important for reducing energy consumption and realizing an economically viable application in industry. Herein, we developed a novel advanced copper terephthalate MOF (CuBDC) between graphene oxide (GO) layers using a simple space-confined growth strategy at room temperature. The inclusion of CuBDC@GO can realize high filler loadings while maintaining uniform dispersion throughout PDMS matrix. The paralled arranged CuBDC sheets created 1D inner vertical channels, along with the enlarged GO interlayer space for rapid molecule permeselective transport. The resultant mixed matrix membranes (MMMs) with 30 wt% CuBDC@GO loading improved the separation factor from 190.6 to 576.3, and simultaneously increased the total flux from 575.2 to 1357.4 g m -2 h -1 for separating 0.5 wt% butyl acetate at 40 °C. The transport mechanism was explained by adjusting the CuBDC content in composites to examine the significant increase in membrane permeability (from 12.5 to 58.3) and selectivity (from 0.7 to 2.0). Compared to alcohol or ketone, the larger size strip-like butyl acetate molecules are ideal for rapid transport through the CuBDC-supported 1D continuous inner channels, and effectively inhibit the movement of water molecules, ultimately resulting in the largest pervaporation performance improvement in butyl acetate/water separation. This CuBDC@GO prepared by a simple, green and room-temperature synthesis route can be widely applied to prepare defect-free membranes with excellent performance for sustainable applications. We also anticipate that this advanced space-confined growth strategy can be extended to various other MOFs and applications.
研究领域:
材料科学
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化学工程
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环境科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Weibin Chen,Chao Chen,Lei Li,Zhan Lin
Transition metal sulfides and their hybrids are promising alternative to precious metal catalyst for the oxygen evolution reaction (OER). Herein, the high-density Co 9 S 8 nanoparticles (NPs) embedded in N-doped carbon has been prepared by using surface-engineered zeolitic imidazolate framework-9 (ZIF-9) nanosheets as precursor. The surface of ZIF-9 was modified with TAA , which is able to create chemical barrier and prevents metal from aggregation in the subsequent pyrolysis , thus making small Co 9 S 8 NPs densely anchored on carbon layers . Arising from the unique structure, Co 9 S 8 @NC affords an optimized electronic structure and rich effective reactive sites for OER. As expected, Co 9 S 8 @NC exhibits small overpotential of 264 mV at 10 mA cm −2 , low Tafel slope of 68.4 mV dec −1 , and superior stability for alkaline OER (0.1 M KOH). The electrolysis cell , which was equipped with Co 9 S 8 @NC cathode and Pt/C anode, shows low water splitting voltage of 1.58 V at 10 mA cm −2 in 1.0 M KOH. This work employs an efficacious surface engineering strategy to design metal sulfide-based electrocatalysts for enhancing OER performance.
研究领域:
材料科学
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电化学
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催化
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Jinjuan Gao,Wen Yang,Runcheng Liu,Jingwen Feng,Yaru Li,Mingshun Jiang,Shouzhen Jiang
The optical fiber sensor, which exploits surface plasmon resonance (SPR), finds extensive application in biological detection owing to its miniaturized and real-time measurement capabilities. Nevertheless, SPR sensors alone exhibit limited sensitivity when detecting small biological molecules. This paper presents a novel gold nanoparticle (AuNPs)/two-dimensional metal–organic framework (2D MOF Cu-TCPP)/Au/D-shaped fiber SPR sensor for dopamine detection. The composite structure of AuNPs/2D MOF/Au was designed to facilitate the coupling of SPR and local surface plasmon resonance (LSPR), resulting in a substantial enhancement of the intensity of the surface electric field. A 104.61 % increase in sensitivity and a 73.87 % increase in figure of merit (FOM) were achieved by optimizing the optimal deposition concentration of AuNPs/2D MOF . The finite element method was utilized in COMSOL software to demonstrate that the coupling of SPR and LSPR can significantly enhance the sensitivity value (10,000 nm/RIU). Additionally, the sensitization mechanism of the sensor is elucidated by the energy band theory. Moreover, probe DNA was utilized as a linker to capture dopamine molecules, achieving a low limit of detection (LOD) of 1.07 ± 0.07*10 −14 M. These results demonstrated that the proposed sensor enables accurate and highly sensitive detection of dopamine molecules.
研究领域:
生物医学工程
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纳米技术
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光学传感
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Xunzhi Deng,Qinyao Li,Jing Lu,Yilin Liu,Haiou Li,Ze Liao,Gang Huang,Langtao Xiao,Zhoufei Luo
Strigolactones (SLs) are novel plant hormones that play crucial roles in regulating plant growth and development. The stereoisomers of SLs often exhibit distinct biological activities, making their chiral separation and analysis essential for understanding their regulatory roles in plant branching. This study focused on the chiral separation and characterization of SL stereoisomers, including GR24 (synthetic) and strigol (natural). A magnetic nanocomposite (Ni₃(HITP)₂@Fe₃O₄@rGO) was synthesized for SL extraction, combined with SFC-MS/MS for precise separation and quantification. The method exhibited excellent linearity (0.2–50 ng/mL), minimal matrix effects (1.64–2.17 %), and low detection limits (1.93–3.76 pg/mL). Recoveries ranged from 86.90 % to 106.37 % with RSDs of 2.56 %–13.54 %. Under nitrogen and phosphorus stress, only (+)-strigol was detected in the roots of Oryza sativa L., suggesting its regulatory role under stress conditions. This reliable method provides robust support for exploring the physiological roles of SL stereoisomers in plants, shedding light on their functions in stress response and development.
研究领域:
植物学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ACS Nano
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2024
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IF 15.8
Jianshuai Bao,Jiefei Wang,Sudi Chen,Shiqi Liu,Zhen Wang,Weiwei Zhang,Chenhui Zhao,Yuling Sha,Xiaoyan Yang,Yusen Li,Yong Zhong,Feng Bai
Reactive oxygen species (ROS) mediated tumor cell death is a powerful anticancer strategy. Cuproptosis is a copper-dependent and ROS-mediated prospective tumor therapy strategy. However, the complex tumor microenvironment (TME), low tumor specificity, poor therapy efficiency, and lack of imaging capability impair the therapy output of current cuproptosis drugs. Herein, we designed a dual-responsive two-dimensional metal–organic framework (2D MOF) nanotheranostic via a coordination self-assembly strategy using Au(III) tetra-(4-pyridyl) porphine (AuTPyP) as the ligand and copper ions (Cu2+) as nodes. The dual-stimulus combined with the protonation of the pyridyl group in AuTPyP and deep-penetration ultrasound (US) together triggered the controlled release in an acidic TME. The ultrathin structure (3.0 nm) of nanotheranostics promoted the release process. The released Cu2+ was reduced to Cu+ by depleting the overexpressed glutathione (GSH) in the tumor, which not only activated the Ferredoxin 1 (FDX1)-mediated cuproptosis but also catalyzed the overexpressed hydrogen peroxide (H2O2) in the tumor into reactive oxygen species via Fenton-like reaction. Simultaneously, the released AuTPyP could specifically bind with thioredoxin reductase and activate the redox imbalance of tumor cells. These together selectively induced significant mitochondrial vacuoles and prominent tumor cell death but did not damage the normal cells. The fluorescence and magnetic resonance imaging (MRI) results verified this nanotheranostic could target the HeLa tumor to greatly promote the self-enhanced effect of chemotherapy/cuproptosis and tumor inhibition efficiency. The work helped to elucidate the controlled assembly of multiresponsive nanotheranostics and the high-specificity ROS regulation for application in anticancer therapy.
研究领域:
纳米技术
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癌症治疗
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材料科学
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生物医学工程
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化学
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药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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